An Accurate Flux Density Scale from 50 MHz to 50 GHz

By Richard Perley, Bryan Butler. 2016

276 citations recorded by the source corpus.

The flux-density scale of Perley & Butler is extended downward to ∼50 MHz by utilizing recent observations with the Karl G. Jansky Very Large Array (VLA) of 20 sources between 220 MHz and 48.1 GHz, and legacy VLA observations at 73.8 MHz. The derived spectral flux densities are placed on an absolute scale by utilizing the Baars et al. values for Cygnus A (3C405) for frequencies below 2 GHz, and the Mars-based polynomials for 3C286, 3C295, and 3C196 from Perley & Butler above 2 GHz. Polynomial expressions are presented for all 20 sources, with accuracy limited by the primary standards to 3%–5% over the entire frequency range. Corrections to the scales proposed by Perley & Butler, and by Scaife & Heald are given.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/52e3689b8984fd22a3b886e1438254e5ad037689

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In Astronomy and Astrophysics

1. Mark Halpern
2. Gary F. Hinshaw
3. J. Shaw
4. G. Heald
5. E. Sadler
6. L. Hou
7. Saurabh Singh
8. Carole A. Jackson

In Nuclear and High Energy Physics

1. Mark Halpern
2. Gary F. Hinshaw
3. N. McClure-Griffiths
4. E. Sadler
5. S. Foreman
6. Douglas R. Green
7. A. Hill
8. Ue-Li Pen

Citations in the corpus

• The fundamental performance of FAST with 19-beam receiver at L band (2020, background): “The 19-beam receiver covering 1.05-1.45 GHz was used for most of these observations.”
• A revised catalogue of 294 Galactic supernova remnants (2019, background): “6−5.8 have been taken from (Perley & Butler 2017), for an epoch of 2016.”
• An Overview of CHIME, the Canadian Hydrogen Intensity Mapping Experiment (2022, methodology): “The intrinsic flux density of the source across the band is corrected for using the measurements of Perley & Butler (2017).”
• The Rapid ASKAP Continuum Survey I: Design and first results (2020, methodology): “…deviation of fluctuations displayed in Figure 7, we arrive at a final expression: S= 0.5mJy+ 0.07S. (7) To check the absolute flux density scale, we examined the RACS flux densities of sources listed by Perley & Butler (2017), which have well-determined flux densities over the RACS spectral range.”